The authors have developed a new needlet-based method to detect
point sources in cosmic microwave background (CMB) maps and have applied it to
the Wilkinson Microwave Anisotropy Probe (WMAP) 7-year data. They use both the
individual frequency channels as well as internal templates, the latter being
the difference between pairs of frequency channels and hence having the
advantage that the CMB component is eliminated. Using the area of the sky
outside the Kq85 galactic mask, they detect a total of 2102 point sources at
the 5-sigma level in either the frequency maps or the internal templates.
Of these, 1116 are detected either at 5 sigma directly in the frequency
channels or at 5 sigma in the internal templates and >= 3 sigma at the
corresponding position in the frequency channels. Of the 1116 sources, 603 are
detections that have not been reported so far in WMAP data. The authors have
made a catalog of these sources available with position and flux estimated in
the WMAP channels where they are seen. In total, they identified 1029 of the
1116 sources with counterparts at 5 GHz and 69 at other frequencies.

The HEASARC has converted all flux densities and their associated errors from
the Jy units given in the original table into the mJy units which it uses as
its standard for tables with radio- and mm-band flux densities.

Source_Number
A running source number in order of increasing J2000.0
Right Ascension which uniquely identifies each source in the catalog.

Name
The source designation. The HEASARC created this field using the
prefix '[SHM2012]' (for Scodeller, Hansen, Marinucci 2012) and the source
number, in the style recommended by the Dictionary of Nomenclature of
Celestial Objects.

RA
The Right Ascension of the point source in the selected equinox,
given by the weighted average of the positions in all frequencies where
the source was found. This was giben in J2000.0 decimal degrees to a
precision of 1 millidegree in the original table. Based on the results
of simulations, these positions should be accurate to a few arcminutes.

Dec
The Declination of the point source in the selected equinox,
given by the weighted average of the positions in all frequencies where
the source was found. This was giben in J2000.0 decimal degrees to a
precision of 1 millidegree in the original table. Based on the results
of simulations, these positions should be accurate to a few arcminutes.

Flux_23_GHz
The K-band (22.5 GHz) flux density of the WMAP source, in
mJy. The flux densities were specified to a precision of 0.01 Jy (10 mJy)
in the original table. For converting the source temperature and errors from
Kelvin to Jansky, the authors used the effective beam area and relative error
as presented in Table 4 of Jarosik et al. (2011, ApJS, 192, 14).

Flux_23_GHz_Flag
This flag parameter is set to 'i' to indicate very weak
sources for which the authors were unable to correct the corresponding flux for
Eddington bias due to the low S/N level. In such cases, they used the
internal template to estimate the unbiased flux in the given channel, as
explained in Section 4.3 of the reference paper.

Flux_30_GHz
The Ka-band (30 GHz) flux density of the WMAP source, in
mJy. The flux densities were specified to a precision of 0.01 Jy (10 mJy)
in the original table. For converting the source temperature and errors from
Kelvin to Jansky, the authors used the effective beam area and relative error
as presented in Table 4 of Jarosik et al. (2011, ApJS, 192, 14).

Flux_30_GHz_Flag
This flag parameter is set to 'i' to indicate very weak
sources for which the authors were unable to correct the corresponding flux for
Eddington bias due to the low S/N level. In such cases, they used the
internal template to estimate the unbiased flux in the given channel, as
explained in Section 4.3 of the reference paper.

Flux_41_GHz
The Q-band (41 GHz) flux density of the WMAP source, in
mJy. The flux densities were specified to a precision of 0.01 Jy (10 mJy)
in the original table. For converting the source temperature and errors from
Kelvin to Jansky, the authors used the effective beam area and relative error
as presented in Table 4 of Jarosik et al. (2011, ApJS, 192, 14).

Flux_41_GHz_Flag
This flag parameter is set to 'i' to indicate very weak
sources for which the authors were unable to correct the corresponding flux for
Eddington bias due to the low S/N level. In such cases, they used the
internal template to estimate the unbiased flux in the given channel, as
explained in Section 4.3 of the reference paper.

Flux_61_GHz
The V-band (61 GHz) flux density of the WMAP source, in
mJy. The flux densities were specified to a precision of 0.01 Jy (10 mJy)
in the original table. For converting the source temperature and errors from
Kelvin to Jansky, the authors used the effective beam area and relative error
as presented in Table 4 of Jarosik et al. (2011, ApJS, 192, 14).

Flux_61_GHz_Flag
This flag parameter is set to 'i' to indicate very weak
sources for which the authors were unable to correct the corresponding flux for
Eddington bias due to the low S/N level. In such cases, they used the
internal template to estimate the unbiased flux in the given channel, as
explained in Section 4.3 of the reference paper.

Flux_94_GHz
The W-band (94 GHz) flux density of the WMAP source, in
mJy. The flux densities were specified to a precision of 0.01 Jy (10 mJy)
in the original table. For converting the source temperature and errors from
Kelvin to Jansky, the authors used the effective beam area and relative error
as presented in Table 4 of Jarosik et al. (2011, ApJS, 192, 14).

Flux_94_GHz_Flag
This flag parameter is set to 'i' to indicate very weak
sources for which the authors were unable to correct the corresponding flux for
Eddington bias due to the low S/N level. In such cases, they used the
internal template to estimate the unbiased flux in the given channel, as
explained in Section 4.3 of the reference paper.

Detection_Flags
This parameter contains 5 flags, one for each frequency
channel (K, Ka, Q, V, W), indicating whether the authors detected the source
at 5 sigma in the individual channel ('C'), or in the template with
a 3-sigma detection in the channel ('F'), or not at all ('.').

Catalog_Flags
This parameter contains up to 3 flags, indicating if
the found source has been identified with a known source in the specified
catalog in at least one frequency, using the following catalog codes:

Offset
The angular offset, in arcminutes, of the source from the position
in the identification in the indicated catalog.

Source_Flag
This parameter contains up to 2 flags, indicating source weakness and/or
confusion. A flag value of 'M' is used if there are multiple possible
identifications (where the authors took the brightest one) and a flag value
of 'A' is used if the listed counterpart has a flux density below 100 mJy.